fix: Mock Skia's APIs for docs generation

[marc2332]

Might fix #285

[codecov]

Codecov Report

Patch coverage: 57.89% and no project coverage change.

Comparison is base (e083630) 52.41% compared to head (4ecf3c7) 52.41%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #288   +/-   ##
=======================================
  Coverage   52.41%   52.41%           
=======================================
  Files         129      129           
  Lines       11181    11181           
=======================================
  Hits         5861     5861           
  Misses       5320     5320           

Files Changed	Coverage Δ
components/src/graph.rs	0.00% <ø> (ø)
core/src/events.rs	96.82% <ø> (ø)
core/src/layers.rs	98.30% <ø> (ø)
core/src/layout.rs	100.00% <ø> (ø)
core/src/render.rs	0.00% <ø> (ø)
devtools/src/property.rs	0.00% <ø> (ø)
hooks/src/shader_uniforms.rs	0.00% <ø> (ø)
hooks/src/use_animation_transition.rs	70.28% <ø> (ø)
layout/src/layers.rs	54.71% <ø> (ø)
renderer/src/app.rs	0.00% <ø> (ø)
... and 30 more

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